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# Copyright (C) 2006-2007, Red Hat, Inc.
# Copyright (C) 2009 One Laptop Per Child
# Author: Sayamindu Dasgupta <sayamindu@laptop.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import gtk, gobject
import dbus
import logging
import evince
from sugar.graphics import style
from sugar.graphics.icon import Icon, get_icon_state
from gettext import gettext as _
_LEVEL_PROP = 'battery.charge_level.percentage'
_CHARGING_PROP = 'battery.rechargeable.is_charging'
_DISCHARGING_PROP = 'battery.rechargeable.is_discharging'
_PRESENT_PROP = 'battery.present'
_ICON_NAME = 'battery'
# Taken from sugar/extensions/deviceicon/battery.py
class BattMan(gobject.GObject):
__gproperties__ = {
'level' : (int, None, None, 0, 100, 0,
gobject.PARAM_READABLE),
'charging' : (bool, None, None, False,
gobject.PARAM_READABLE),
'discharging' : (bool, None, None, False,
gobject.PARAM_READABLE),
'present' : (bool, None, None, False,
gobject.PARAM_READABLE)
}
def __init__(self, udi):
gobject.GObject.__init__(self)
bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM)
proxy = bus.get_object('org.freedesktop.Hal', udi,
follow_name_owner_changes=True)
self._battery = dbus.Interface(proxy, 'org.freedesktop.Hal.Device')
bus.add_signal_receiver(self._battery_changed,
'PropertyModified',
'org.freedesktop.Hal.Device',
'org.freedesktop.Hal',
udi)
self._level = self._get_level()
self._charging = self._get_charging()
self._discharging = self._get_discharging()
self._present = self._get_present()
def _get_level(self):
try:
return self._battery.GetProperty(_LEVEL_PROP)
except dbus.DBusException:
logging.error('Cannot access %s' % _LEVEL_PROP)
return 0
def _get_charging(self):
try:
return self._battery.GetProperty(_CHARGING_PROP)
except dbus.DBusException:
logging.error('Cannot access %s' % _CHARGING_PROP)
return False
def _get_discharging(self):
try:
return self._battery.GetProperty(_DISCHARGING_PROP)
except dbus.DBusException:
logging.error('Cannot access %s' % _DISCHARGING_PROP)
return False
def _get_present(self):
try:
return self._battery.GetProperty(_PRESENT_PROP)
except dbus.DBusException:
logging.error('Cannot access %s' % _PRESENT_PROP)
return False
def do_get_property(self, pspec):
if pspec.name == 'level':
return self._level
if pspec.name == 'charging':
return self._charging
if pspec.name == 'discharging':
return self._discharging
if pspec.name == 'present':
return self._present
def get_type(self):
return 'battery'
def _battery_changed(self, num_changes, changes_list):
for change in changes_list:
if change[0] == _LEVEL_PROP:
self._level = self._get_level()
self.notify('level')
elif change[0] == _CHARGING_PROP:
self._charging = self._get_charging()
self.notify('charging')
elif change[0] == _DISCHARGING_PROP:
self._discharging = self._get_discharging()
self.notify('discharging')
elif change[0] == _PRESENT_PROP:
self._present = self._get_present()
self.notify('present')
class _TopBar(gtk.HBox):
__gproperties__ = {
'completion-level' : (float, None, None, 0.0, 100.0, 0.0,
gobject.PARAM_READWRITE),
}
def __init__(self):
gtk.HBox.__init__(self)
self.set_border_width(int(style.DEFAULT_SPACING/2.0))
self.set_spacing(style.DEFAULT_SPACING * 4)
self._completion_level = 0
self._progressbar = None
try:
bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM)
proxy = bus.get_object('org.freedesktop.Hal',
'/org/freedesktop/Hal/Manager')
hal_manager = dbus.Interface(proxy, 'org.freedesktop.Hal.Manager')
udis = hal_manager.FindDeviceByCapability('battery')
if len(udis) > 0:
self._battery = BattMan(udis[0]) # TODO: Support more than one battery
self._battery.connect('notify::level', \
self._battery_level_changed_cb)
else:
self._battery = None
except dbus.exceptions.DBusException:
self._battery = None
logging.warning('Hardware manager service not found, no idle \
suspend.')
self._icon = None
self._setup()
def do_get_property(self, property):
if property.name == 'completion-level':
return self._completion_level
else:
raise AttributeError, 'unknown property %s' % property.name
def do_set_property(self, property, value):
if property.name == 'completion-level':
self.set_completion_level(value)
else:
raise AttributeError, 'unknown property %s' % property.name
def set_completion_level(self, value):
self._completion_level = value
self._progressbar.set_fraction(self._completion_level/100.0)
def _setup(self):
self._progressbar = gtk.ProgressBar()
self._progressbar.props.discrete_blocks = 10
self._progressbar.set_fraction(self._completion_level/100.0)
self.pack_start(self._progressbar, expand = True, fill = True)
if self._battery is not None:
icon_name = get_icon_state(_ICON_NAME, self._battery.props.level, step=-5)
self._icon = Icon(icon_name=icon_name)
self.pack_start(self._icon, expand = False, fill = False)
def _battery_level_changed_cb(self, pspec, param):
icon_name = get_icon_state(_ICON_NAME, self._battery.props.level, step=-5)
self._icon.props.icon_name = icon_name
class TopBar(_TopBar):
def __init__(self):
_TopBar.__init__(self)
self._document = None
def set_document(self, document):
self._document = document
model = evince.DocumentModel()
model.props.document = self._document
model.connect('page-changed', self._page_changed_cb)
def _page_changed_cb(self, model, page_from, page_to):
current_page = self._model.props.page
n_pages = self._document.get_n_pages()
self.set_completion_level(current_page * 100/n_pages)
#TRANS: Translate this as Page i of m (eg: Page 4 of 334)
self._progressbar.set_text(_("Page %i of %i") % (current_page, n_pages))
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